The finder is compact and easy to carry.Binding with your mobile devices,which could be widely applied to the anti-lost and finding of your wallets,children,pets,briefcases,luggage and drag boxes,and some other valuables.You don’t need buy any external devices to your iPhone or iPad with BLE4.0.You can set the alarm conditions(anti-lost or finding),four kinds of alarm modes(sounding with shaking).When your mobile devices and finder are beyond the effective distance,they will alarm.They could find with each other.